The Ka of a monoprotic weak acid is 2 50 10 3 What is thepercent ion...

Ka of monoprotic acid 250 103 HA H A 0176 0 ....

The Ka of a monoprotic weak acid is 2.50 Ã— 10-3. What is the percent ionization...

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Chemistry

The Ka of a monoprotic weak acid is 2.50 Ã— 10-3. What is thepercent ionization of a 0.176 M solution of this acid?

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4.3 Ratings (785 Votes)

Ka of monoprotic acid = 2.50 Ã— 10^-3

Â Â HAÂ Â Â Â ---------------> H+ + A-

0.176Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0Â Â Â Â Â Â Â Â 0

0.176 - xÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â xÂ Â Â Â Â Â Â Â Â x

Ka = [H+][A-] / [HA]

2.5 x 10^-3 = x^2 / 0.176 - x

x^2 + 2.5 x 10^-3 x - 4.4 x 10^-4 = 0

x = 0.0197

[H+] = 0.0197 M

% ionization = ( [H+] / initial concentration ) x 100

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = (0.0197 / 0.176 ) x 100

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 11.19%

Â Â Â

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The Ka of a monoprotic weak acid is 2.50 Ã— 10-3. What is the percent ionization...

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Chemistry

The Ka of a monoprotic weak acid is 2.50 Ã— 10-3. What is thepercent ionization of a 0.176 M solution of this acid?

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